Pg.62 #3025 Nevada Power House, from the downstream cofferdam. Jan. 28th, 1935. Pg.62 #3059 Diversion Tunnel No.1 Trashrack and counterweight assembly just prior to the diverting of the Colorado river into the tunnel. Feb. 1st, 1935. Pg.62 #3026 Arizona Power House, from the downstream cofferdam. Jan. 28th, 1935. Pg.62 #3054 Diversion of the Colorado River into Diversion Tunnel No.1 as the Gate on Diversion Tunnel No.4 is being lowered. Feb. 1st,1935.
Pg.65 #3118 Looking down on top of Boulder Dam. Note the bucket pouring the roadway on "R" block at elev. 1232. Feb. 25th, 1935. Pg.65 #3126 Telephoto view of the Arizona Valve House, from the Nevada side. Feb. 25th, 1935. Pg.65 #3141 A view of Boulder Dam Lake and reservoir area from Observation Point. March 4th, 1935. Pg.65 #3127 Telephoto view of the Nevada Valve House, from the Arizona side. Feb. 25th, 1935.
Pg.73 #3238 Telephoto view of the Arizona Valve House. Apr. 25, 1935. Pg.73 #3234 A telephoto view from the Nevada side, showing some of the Arizona power House roof girders in position. Note the Universal Crane on top. The girder on the flat car has just been lowered by means of the Government Cableway. Apr. 25, 1935. Pg.73 #3237 Telephoto of the Nevada Valve House. Note the forms for the roof beams being built. Apr. 25, 1935. Pg.73 #3245 View taken from the upstream end of No.4 Plug, looking downstream, showing the method of pouring. Apr. 26, 1935.
Pg.85 #3355 Looking downstream toward the Arizona Spillway, showing highway bridge and Arizona Highway. Jul. 25, 1935. Pg.85 #3381 Switchyard, Rigging Loft, and surround area. Jul. 26, 1935. Pg.85 #3379 Looking downstream toward No.1 raise and Nevada Spillway. Note drainage flume in foreground. Jul. 26, 1935. Pg.85 #3383 Looking into No.3 downstream plug, from the Nevada plug adit. Note forms for the first pour being built. Jul. 26, 1935.
Pg.88 #3401 Boulder Dam and Intake Towers, from Arizona side. Aug. 26, 1935. Pg.88 #3408 Looking upstream toward Nevada Spillway drainage flume and general area. Aug. 26, 1935. Pg.88 #3391 Looking upstream toward Boulder Lake, from Observation Point. Aug. 21, 1935. Pg.88 #3409 View taken from Arizona Intake Towers, looking toward Arizona Spillway. Note excavation for the float well supply line. Aug. 26, 1935.
Pg.90 #3417 View of Arizona side of lower portals clean-up. Aug. 26, 1935. Pg.90 #3397 Nevada construction adits, Valve House and plug adit portal. Note absence of upstream end of lower portal road tunnel. Aug. 21, 1935. Pg.90 #3412 View of Nevada side of lower portals clean-up. Aug. 26, 1935. Pg.90 #3431 View taken from downstream Nevada Plug adit, looking toward No.2 downstream plug. Aug. 27, 1935.
p.3 #888 Lower portals of Diversion tunnels No.3 and 4 during flood. Feb. 10, 1932 p.3 #896 Bucyrus Erie 43-B gas-air shovel was the only piece of equipment caught by the flood. Feb. 10, 1932. p.3 #884 Looking across river at lower portal of Diversion Tunnel No.3. Feb 10, 1932 p.3 #897 Looking across river from Arizona side at upper portals of diversion tunnels No.1 and 2. Truck bridge in foreground has been partially washed out. Feb. 10, 1932.
p.4 #795 Portion of gravel pits on Arizona side of the river, 11 miles above damsite. Hills in background are across the river in Nevada, 5 miles away. Jan. 16, 1932. p.4 #902 Close-up of drag line loading 30 cub yard Western side-dump car. Plymouth gasoline locomotive switching. Feb. 10, 1932. p.4 #906 Marion electric drag line with 5 cubic yard capacity bucket, loading gravel. Feb. 10, 1932. p.4 #904 First train loaded with gravel leaving gravel pits for screening plant. Feb. 10, 1932.
p.10 #1016 Gantry crane used in pouring concrete in invert section of upper Diversion Tunnel No.3. Mar. 18, 1932. p.10 #1019 View showing method of pouring concrete in invert section of tunnel lining. Mar. 18, 1932. p.10 #1018 view of invert forms in upper Diversion Tunnel No.3 showing method of pouring slabs. Trimming jumbo for aligning gauge of tunnels in background. Mar. 18, 1932. p.10 #1020 First 40 foot slab of concrete poured in lining diversion tunnels. Mar. 18, 1932.